diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 0520aa9fe991e..36e163f383684 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -1424,7 +1424,7 @@ bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu)
 
 bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu)
 {
-	return pmu->is_core && perf_pmus__num_core_pmus() > 1;
+	return pmu->is_core && perf_pmus__num_core_pmus() == 1;
 }
 
 bool perf_pmu__have_event(const struct perf_pmu *pmu, const char *name)